import uuid
from sqlalchemy import Column, String, Text, Boolean, DateTime, ForeignKey
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
from app.core.database import Base


class Comment(Base):
    __tablename__ = "pjctrl_comments"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    task_id = Column(String(36), ForeignKey("pjctrl_tasks.id", ondelete="CASCADE"), nullable=False)
    parent_comment_id = Column(String(36), ForeignKey("pjctrl_comments.id", ondelete="CASCADE"), nullable=True)
    author_id = Column(String(36), ForeignKey("pjctrl_users.id"), nullable=False)
    content = Column(Text, nullable=False)
    is_edited = Column(Boolean, default=False, nullable=False)
    is_deleted = Column(Boolean, default=False, nullable=False)
    created_at = Column(DateTime, server_default=func.now(), nullable=False)
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)

    # Relationships
    task = relationship("Task", back_populates="comments")
    author = relationship("User", back_populates="comments")
    parent_comment = relationship("Comment", remote_side=[id], back_populates="replies")
    replies = relationship("Comment", back_populates="parent_comment", cascade="all, delete-orphan")
    mentions = relationship("Mention", back_populates="comment", cascade="all, delete-orphan")